Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html

Study Counts

Type	Study_count
Total_Studies	2135
interventional	1630
Observational	461
Registry	44

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type	Study_Count
Drug	644
Drug\|placebo	305
Other	169
Behavioral	123
Device	83
Dietary Supplement	53
Procedure	52
Dietary Supplement\|placebo	32
Biological	29
Drug\|Other	25
Drug\|Procedure	17
Biological\|placebo	9
Device\|Drug	8
Behavioral\|Other	6
Biological\|Drug	6
Device\|Other	6
Diagnostic Test	6
Dietary Supplement\|Drug\|placebo	6
Behavioral\|Dietary Supplement	5
Dietary Supplement\|Drug	5
Biological\|Procedure	4
Device\|Procedure	4
Behavioral\|Drug	3
Drug\|Other\|placebo	3
Other\|Procedure	3
Behavioral\|Procedure	2
Biological\|Drug\|placebo	2
Biological\|Other	2
Dietary Supplement\|Other	2
Drug\|placebo\|Procedure	2
Other\|placebo	2
Behavioral\|Device	1
Behavioral\|Drug\|Procedure	1
Biological\|Device\|Other	1
Biological\|Drug\|Other	1
Combination Product\|placebo	1
Device\|Drug\|Other	1
Diagnostic Test\|Other	1
Dietary Supplement\|Drug\|Other	1
Dietary Supplement\|Other\|placebo	1
Drug\|Procedure\|Radiation	1
Drug\|Radiation	1
Radiation	1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country	Study_Count
United States	569
NA	129
China	77
Japan	68
Canada	58
France	41
Germany	40
United Kingdom	40
Denmark	36
Brazil	34
Korea, Republic of	30
Italy	29
Taiwan	27
United States\|Puerto Rico	22
Iran, Islamic Republic of	20
Netherlands	16
Mexico	15
Belgium	14
Spain	14
Australia	13
Switzerland	13
Hong Kong	11
Turkey	11
United States\|Canada	11
Egypt	7
Sweden	7
Austria	6
India	6
Israel	6
Greece	5
Ireland	5
Thailand	5
Argentina	4
Singapore	4
United States\|Japan	4
United States\|Poland	4
Australia\|New Zealand	3
New Zealand	3
Norway	3
Paraguay	3
Poland	3
Russian Federation	3
Australia\|Canada\|New Zealand	2
Chile	2
Malaysia	2
Philippines	2
Romania	2
Argentina\|Australia\|Belgium\|Brazil\|Croatia\|Czechia\|France\|Germany\|Greece\|Israel\|Italy\|Korea, Republic of\|Lithuania\|Malaysia\|Mexico\|Panama\|Philippines\|Poland\|Russian Federation\|Serbia\|Singapore\|Spain\|Sweden\|Taiwan\|Thailand\|Turkey\|United Kingdom	1
Argentina\|Chile\|Czechia\|Germany\|Hungary\|Poland\|Romania\|Russian Federation\|Turkey	1
Argentina\|Czechia\|France\|Germany\|India\|Singapore\|Spain\|United Kingdom	1
Argentina\|Paraguay	1
Argentina\|United States\|Brazil\|Canada\|Czech Republic\|Germany\|Mexico\|Poland\|Puerto Rico\|Russian Federation\|Spain\|Ukraine	1
Armenia\|Georgia\|Moldova, Republic of	1
Australia\|Austria\|Czech Republic\|France\|Germany\|Hungary\|Italy\|Poland\|South Africa\|Spain\|United Kingdom	1
Australia\|Belgium\|Bulgaria\|Czech Republic\|Denmark\|Estonia\|France\|Germany\|Greece\|Hungary\|Israel\|Italy\|Latvia\|Mexico\|Poland\|Portugal\|Romania\|Russian Federation\|Serbia\|Slovakia\|Slovenia\|Spain\|United Kingdom	1
Australia\|Belgium\|France\|Germany\|Hungary\|Italy\|Poland\|Romania\|Russian Federation\|Spain\|Thailand\|Ukraine	1
Australia\|Brazil\|Canada\|Colombia\|Ecuador\|India\|Malaysia\|Philippines\|United Kingdom\|Uruguay	1
Australia\|Bulgaria\|France\|Germany\|Hungary\|Israel\|Italy\|Japan\|Korea, Republic of\|Poland\|Romania\|Spain\|Turkey\|United Kingdom	1
Australia\|Canada\|China\|Hong Kong\|India\|Malaysia	1
Australia\|Canada\|China\|India	1
Australia\|Canada\|China\|New Zealand	1
Australia\|Denmark\|France\|Germany\|United Kingdom	1
Australia\|India\|New Zealand\|Russian Federation	1
Australia\|Poland	1
Australia\|United States\|Argentina\|Belgium\|Canada\|Czechia\|Denmark\|Germany\|Hungary\|Israel\|Italy\|Netherlands\|Norway\|Poland\|Romania\|Russian Federation\|South Africa\|Spain\|Sweden\|United Kingdom	1
Austria\|Belarus\|Bulgaria\|Croatia\|Czechia\|Finland\|France\|Georgia\|Germany\|Hungary\|Ireland\|Israel\|Latvia\|Montenegro\|Netherlands\|North Macedonia\|Poland\|Portugal\|Romania\|Russian Federation\|Serbia\|Slovakia\|Slovenia\|Spain\|Ukraine\|United Kingdom	1
Austria\|Bulgaria\|France\|Germany\|Italy\|Macedonia, The Former Yugoslav Republic of\|Poland\|Romania\|Russian Federation\|Ukraine	1
Austria\|France\|Germany	1
Austria\|United States\|Belgium\|Canada\|Czechia\|Denmark\|Estonia\|France\|Germany\|Greece\|Hungary\|Italy\|Latvia\|Lithuania\|New Zealand\|Poland\|Portugal\|Russian Federation\|Spain\|Sweden\|Switzerland\|Turkey	1
Bangladesh	1
Belarus\|Belgium\|Bulgaria\|Colombia\|Dominican Republic\|Estonia\|Georgia\|Greece\|Guatemala\|Hungary\|Italy\|Panama\|Peru\|Poland\|Romania\|Russian Federation\|Serbia\|South Africa\|Spain\|Turkey\|Ukraine\|United Kingdom	1
Belarus\|Bulgaria\|Croatia\|Denmark\|Indonesia\|Israel\|Italy\|Latvia\|Lithuania\|Malaysia\|Romania\|Singapore\|Thailand	1
Belgium\|Canada\|France\|Netherlands\|Poland\|Spain\|United Kingdom	1
Belgium\|Czech Republic\|Denmark\|Finland\|Germany\|Italy\|Netherlands\|Spain\|Sweden\|United Kingdom	1
Belgium\|Czech Republic\|Germany\|Hungary\|Poland\|United Kingdom	1
Belgium\|Czechia\|Denmark\|Germany\|Greece\|Italy\|Macedonia, The Former Yugoslav Republic of\|Netherlands\|Spain\|United Kingdom	1
Belgium\|Denmark\|France\|Italy\|Netherlands\|Spain\|United Kingdom	1
Belgium\|Germany\|Italy\|United Kingdom	1
Belgium\|Germany\|Portugal\|Spain\|United Kingdom	1
Belgium\|Italy	1
Bulgaria\|Czech Republic\|Hungary\|Poland\|Romania\|Slovakia	1
Bulgaria\|Denmark\|Finland\|Israel\|Italy\|Spain\|Sweden	1
Bulgaria\|Georgia	1
Bulgaria\|Hungary\|Lithuania\|Romania\|Slovakia	1
Bulgaria\|Moldova, Republic of\|Romania	1
Bulgaria\|Romania\|United Kingdom	1
Bulgaria\|South Africa	1
Canada\|Germany\|United Kingdom	1
Canada\|Malaysia\|Netherlands	1
China\|Hong Kong	1
China\|Japan	1
China\|Slovakia\|United States\|Argentina\|Australia\|Brazil\|Bulgaria\|Canada\|Chile\|Colombia\|Czechia\|France\|Germany\|Guatemala\|Hungary\|India\|Japan\|Korea, Republic of\|Lithuania\|Malaysia\|Mexico\|New Zealand\|Philippines\|Poland\|Puerto Rico\|Romania\|Russian Federation\|Serbia\|South Africa\|Spain\|Taiwan\|Ukraine\|United Arab Emirates\|United Kingdom	1
Colombia	1
Colombia\|Finland\|Germany\|Guatemala\|Korea, Republic of\|Philippines\|Poland\|Romania\|Russian Federation\|Singapore	1
Croatia\|United States\|Austria\|Belgium\|Czech Republic\|Germany\|Latvia\|Lithuania\|Poland\|Romania\|Russian Federation\|Serbia\|South Africa\|Ukraine\|United Kingdom	1
Czech Republic	1
Czech Republic\|France\|Austria\|Germany\|Hungary\|Italy\|Macedonia, The Former Yugoslav Republic of\|Malaysia\|Poland\|Russian Federation\|Serbia\|South Africa\|Spain\|Ukraine\|United Kingdom	1
Czech Republic\|France\|Germany\|Hungary\|Italy\|Lithuania\|Poland\|Portugal\|Serbia\|Sweden\|Switzerland\|Turkey	1
Czechia\|Denmark\|Germany\|Hungary\|Italy\|Netherlands\|Poland\|Spain\|United Kingdom	1
Czechia\|Germany	1
Czechia\|Germany\|Hong Kong\|Korea, Republic of\|Malaysia\|Philippines\|Singapore\|Taiwan\|Thailand\|United Kingdom	1
Czechia\|Hungary	1
Czechia\|United States\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Bulgaria\|Canada\|Chile\|China\|Colombia\|Denmark\|Finland\|France\|Germany\|Greece\|Hong Kong\|Hungary\|Ireland\|Israel\|Italy\|Japan\|Korea, Republic of\|Lithuania\|Malaysia\|Mexico\|Netherlands\|New Zealand\|Norway\|Philippines\|Poland\|Portugal\|Puerto Rico\|Romania\|Russian Federation\|Singapore\|Slovakia\|South Africa\|Spain\|Sweden\|Switzerland\|Taiwan\|Thailand\|Turkey\|Ukraine\|United Kingdom\|Vietnam	1
Denmark\|Germany\|Hong Kong\|Israel\|Poland\|Singapore\|Sweden\|Switzerland\|United Kingdom	1
Denmark\|Norway	1
Estonia	1
Finland	1
France\|Belgium	1
France\|Germany\|Spain\|United Kingdom	1
France\|Germany\|United Kingdom	1
France\|Romania	1
France\|United States\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Bulgaria\|Canada\|Czechia\|Denmark\|Estonia\|Germany\|Greece\|Hungary\|India\|Italy\|Korea, Republic of\|Malaysia\|Mexico\|Netherlands\|New Zealand\|Norway\|Poland\|Portugal\|Romania\|Russian Federation\|Singapore\|South Africa\|Spain\|Sweden\|Taiwan\|Turkey\|Ukraine\|United Kingdom	1
France\|United States\|Australia\|Austria\|Belgium\|Canada\|Czechia\|Denmark\|Germany\|Greece\|Hungary\|Israel\|Italy\|Latvia\|Lithuania\|Netherlands\|New Zealand\|Poland\|Portugal\|Russian Federation\|Spain\|Sweden\|Switzerland\|Turkey	1
Georgia\|Slovenia	1
Germany\|Austria\|Belgium\|Czech Republic\|Denmark\|Finland\|Israel\|Norway\|Poland\|Sweden	1
Greece\|Slovenia	1
Hungary\|Australia\|Belgium\|Canada\|France\|Germany\|Greece\|Hong Kong\|Israel\|Italy\|Korea, Republic of\|Poland\|Russian Federation\|Spain\|Taiwan\|Thailand	1
Hungary\|Croatia\|Georgia\|Serbia\|Slovenia	1
Indonesia	1
Ireland\|Italy\|United Kingdom	1
Italy\|Slovenia	1
Italy\|Switzerland	1
Japan\|Taiwan	1
Japan\|United States\|Australia\|Canada\|New Zealand	1
Korea, Republic of\|China\|Hong Kong\|India\|Malaysia\|Taiwan	1
Lithuania\|Bulgaria\|Germany\|Latvia\|Netherlands\|Poland\|Slovakia\|Ukraine	1
Malaysia\|Hungary\|Italy\|Macedonia, The Former Yugoslav Republic of\|Poland\|Russian Federation\|Serbia\|Ukraine	1
Moldova, Republic of	1
Moldova, Republic of\|Romania	1
Netherlands\|Russian Federation	1
Pakistan	1
Poland\|Belgium\|Bulgaria\|Croatia\|Czechia\|France\|Georgia\|Germany\|Hungary\|Italy\|Portugal\|Romania\|Russian Federation\|Serbia\|Slovakia\|Spain\|United Kingdom	1
Poland\|United Kingdom	1
Poland\|United States\|Australia\|Austria\|Bulgaria\|Canada\|Czech Republic\|Denmark\|Finland\|France\|Germany\|Greece\|Hungary\|Israel\|Italy\|Korea, Republic of\|Lithuania\|Netherlands\|Norway\|Portugal\|South Africa\|Spain\|Sweden\|Taiwan\|Turkey	1
Poland\|United States\|Australia\|Austria\|Bulgaria\|Canada\|Czech Republic\|Denmark\|Finland\|France\|Germany\|Hong Kong\|Hungary\|Israel\|Italy\|Korea, Republic of\|Netherlands\|Norway\|Portugal\|South Africa\|Spain\|Sweden\|Taiwan	1
Portugal\|Czech Republic\|Denmark\|France\|Germany\|Italy\|Korea, Republic of\|Malaysia\|Russian Federation\|Slovakia\|Spain\|Taiwan\|Ukraine	1
Portugal\|Spain	1
Qatar	1
Russian Federation\|Germany\|Italy\|Poland\|Romania\|Turkey\|Ukraine	1
Saudi Arabia	1
Serbia	1
Slovakia	1
Slovakia\|Spain\|Czech Republic\|Estonia\|Germany\|Netherlands\|Poland	1
Slovenia	1
Sweden\|Australia\|France\|Italy\|Spain\|United Kingdom	1
United States\|Albania\|Argentina\|Australia\|Belgium\|Brazil\|Bulgaria\|Canada\|Chile\|Colombia\|Czechia\|France\|Georgia\|Hong Kong\|Hungary\|Israel\|Italy\|Korea, Republic of\|Malaysia\|Mexico\|Netherlands\|New Zealand\|North Macedonia\|Poland\|Portugal\|Romania\|Serbia\|Singapore\|Slovakia\|Spain\|Taiwan\|Ukraine\|United Kingdom	1
United States\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Bulgaria\|Canada\|Chile\|China\|Colombia\|Czechia\|Denmark\|Finland\|France\|Germany\|Greece\|Hong Kong\|Hungary\|Ireland\|Israel\|Italy\|Japan\|Korea, Republic of\|Lithuania\|Malaysia\|Mexico\|Netherlands\|New Zealand\|Norway\|Philippines\|Poland\|Portugal\|Puerto Rico\|Romania\|Russian Federation\|Saudi Arabia\|Singapore\|Slovakia\|South Africa\|Spain\|Sweden\|Switzerland\|Taiwan\|Thailand\|Turkey\|Ukraine\|United Kingdom\|Vietnam	1
United States\|Argentina\|Australia\|Austria\|Belgium\|Brazil\|Bulgaria\|Chile\|Colombia\|Croatia\|Czechia\|Egypt\|France\|Germany\|Greece\|India\|Israel\|Italy\|Japan\|Korea, Republic of\|Kuwait\|Lebanon\|Malaysia\|Mexico\|Netherlands\|Norway\|Philippines\|Poland\|Portugal\|Russian Federation\|Saudi Arabia\|Serbia\|Singapore\|Slovakia\|Slovenia\|South Africa\|Spain\|Sweden\|Switzerland\|Taiwan\|Thailand\|Turkey	1
United States\|Argentina\|Australia\|Austria\|Brazil\|Bulgaria\|Canada\|Chile\|Colombia\|Czechia\|France\|Germany\|Hungary\|Israel\|Italy\|Korea, Republic of\|Malaysia\|Mexico\|New Zealand\|Poland\|Puerto Rico\|Romania\|Russian Federation\|Serbia\|Slovakia\|South Africa\|Spain\|Turkey\|Ukraine\|United Kingdom	1
United States\|Argentina\|Australia\|Belarus\|Belgium\|Canada\|Czechia\|Finland\|France\|Germany\|Greece\|Italy\|Korea, Republic of\|Poland\|Spain\|Sweden\|Taiwan\|Turkey\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Brazil\|Bulgaria\|Canada\|Chile\|China\|Czechia\|Denmark\|Estonia\|France\|Georgia\|Germany\|Greece\|Guatemala\|Hungary\|India\|Israel\|Italy\|Korea, Republic of\|Latvia\|Lithuania\|Mexico\|Netherlands\|New Zealand\|North Macedonia\|Norway\|Peru\|Poland\|Portugal\|Puerto Rico\|Romania\|Russian Federation\|Serbia\|Slovakia\|South Africa\|Spain\|Sweden\|Switzerland\|Taiwan\|Turkey\|Ukraine\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Brazil\|Bulgaria\|Canada\|China\|France\|Germany\|Greece\|Hungary\|India\|Israel\|Italy\|Japan\|Malaysia\|Mexico\|Netherlands\|Poland\|Russian Federation\|Slovakia\|South Africa\|Spain\|Thailand\|Turkey\|Ukraine\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Brazil\|Bulgaria\|Canada\|Colombia\|Czechia\|Denmark\|Estonia\|France\|Germany\|Greece\|Hong Kong\|Hungary\|India\|Israel\|Italy\|Korea, Republic of\|Malaysia\|Mexico\|Netherlands\|New Zealand\|Philippines\|Poland\|Portugal\|Romania\|Russian Federation\|Singapore\|South Africa\|Spain\|Sweden\|Taiwan\|Thailand\|Turkey\|Ukraine\|United Kingdom\|Vietnam	1
United States\|Argentina\|Australia\|Belgium\|Canada\|Czechia\|Denmark\|France\|Germany\|Hungary\|Israel\|Italy\|Netherlands\|Norway\|Poland\|Puerto Rico\|Romania\|Russian Federation\|South Africa\|Spain\|Sweden\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Canada\|Denmark\|France\|Germany\|Italy\|Japan\|Netherlands\|Poland\|Romania\|Russian Federation\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Canada\|France\|Germany\|Italy\|Netherlands\|Poland\|Romania\|Russian Federation\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|China\|Colombia\|Czechia\|Denmark\|Finland\|France\|Germany\|Hong Kong\|Hungary\|India\|Israel\|Italy\|Japan\|Korea, Republic of\|Malaysia\|Netherlands\|Norway\|Singapore\|Spain\|Sweden\|Taiwan\|Thailand\|Turkey\|United Kingdom	1
United States\|Argentina\|Australia\|Brazil\|Bulgaria\|Canada\|France\|Germany\|Israel\|Italy\|Korea, Republic of\|Mexico\|Poland\|Portugal\|Russian Federation\|Serbia\|Ukraine\|United Kingdom	1
United States\|Argentina\|Australia\|Brazil\|Bulgaria\|France\|Hungary\|Israel\|Italy\|Korea, Republic of\|Malaysia\|Mexico\|New Zealand\|Poland\|Puerto Rico\|Russian Federation\|South Africa\|Spain\|Ukraine\|United Kingdom	1
United States\|Argentina\|Australia\|Brazil\|Canada\|France\|Italy\|Korea, Republic of\|Mexico\|Poland\|Romania\|Russian Federation\|Spain\|United Kingdom	1
United States\|Argentina\|Australia\|Brazil\|Canada\|France\|Italy\|Korea, Republic of\|Poland\|Romania\|Russian Federation\|Spain\|United Kingdom	1
United States\|Argentina\|Australia\|Brazil\|Canada\|Korea, Republic of\|Mexico\|New Zealand\|Taiwan\|Thailand	1
United States\|Argentina\|Australia\|Canada\|Germany\|Hong Kong\|Italy\|Korea, Republic of\|Malaysia\|Peru\|Poland\|Puerto Rico\|Romania\|Spain	1
United States\|Argentina\|Australia\|Canada\|Germany\|India\|Italy\|Korea, Republic of\|Malaysia\|Mexico\|Poland\|Russian Federation\|South Africa\|Spain\|United Kingdom	1
United States\|Argentina\|Brazil\|Bulgaria\|Canada\|Colombia\|Czechia\|Germany\|Hungary\|India\|Korea, Republic of\|Malaysia\|Mexico\|Peru\|Philippines\|Poland\|Puerto Rico\|Romania\|Russian Federation\|Slovakia\|Spain\|Taiwan\|Thailand\|Turkey\|Ukraine\|Vietnam	1
United States\|Argentina\|Brazil\|Canada\|China\|Denmark\|Germany\|Hungary\|India\|Japan\|Korea, Republic of\|Mexico\|Peru\|Philippines\|Poland\|Russian Federation\|Spain\|Sweden\|Ukraine\|United Kingdom\|Vietnam	1
United States\|Argentina\|Brazil\|Canada\|Colombia\|Germany\|Hungary\|Israel\|Italy\|Mexico\|Poland\|Romania\|Russian Federation\|South Africa\|Spain\|Ukraine	1
United States\|Argentina\|Brazil\|Canada\|Czech Republic\|France\|Italy\|Mexico\|Poland\|Puerto Rico\|Russian Federation\|Ukraine	1
United States\|Argentina\|Brazil\|Colombia\|Germany\|Hungary\|Israel\|Italy\|Mexico\|Poland\|Romania\|Russian Federation\|South Africa\|Spain\|Ukraine	1
United States\|Argentina\|Brazil\|Germany\|Italy\|Korea, Republic of\|Mexico\|Poland\|Portugal\|Russian Federation\|Ukraine	1
United States\|Argentina\|Czechia\|Germany\|Jordan\|Lebanon\|Turkey	1
United States\|Argentina\|India\|Korea, Republic of\|Malaysia\|Russian Federation\|Singapore\|Taiwan\|Turkey	1
United States\|Australia\|Austria\|Belgium\|Bulgaria\|Hungary\|Lithuania\|Poland\|Slovakia\|Spain	1
United States\|Australia\|Austria\|Belgium\|Canada\|Czechia\|France\|Germany\|Hungary\|Israel\|Italy\|Netherlands\|Poland\|Russian Federation\|Spain\|Sweden\|United Kingdom	1
United States\|Australia\|Austria\|Belgium\|Canada\|Czechia\|France\|Germany\|Hungary\|Israel\|Italy\|Poland\|Russian Federation\|Spain\|United Kingdom	1
United States\|Australia\|Austria\|Belgium\|Canada\|France\|Germany\|Italy\|Poland\|Spain\|Switzerland	1
United States\|Australia\|Austria\|Belgium\|Czech Republic\|Denmark\|France\|Germany\|Greece\|Italy\|Netherlands\|Norway\|Poland\|Portugal\|Romania\|Spain\|Sweden\|Turkey\|United Kingdom	1
United States\|Australia\|Belgium\|Canada\|Czech Republic\|France\|Germany\|Hungary\|Israel\|Italy\|Poland\|Spain\|United Kingdom	1
United States\|Australia\|Belgium\|Canada\|Czechia\|France\|Germany\|Hungary\|Israel\|Italy\|Netherlands\|Poland\|Russian Federation\|Spain\|Sweden	1
United States\|Australia\|Belgium\|Canada\|Finland\|France\|Germany\|Italy\|Norway\|Puerto Rico\|Sweden\|Switzerland\|United Kingdom	1
United States\|Australia\|Belgium\|Canada\|France\|Germany\|Greece\|Italy\|Netherlands\|Puerto Rico\|Spain\|Sweden\|United Kingdom	1
United States\|Australia\|Belgium\|Croatia\|Czechia\|Estonia\|France\|Germany\|Hong Kong\|Italy\|Korea, Republic of\|Lithuania\|New Zealand\|Poland\|Portugal\|Spain\|Taiwan\|United Kingdom	1
United States\|Australia\|Canada	1
United States\|Australia\|Canada\|Czech Republic\|Hungary\|Italy\|Korea, Republic of\|Lithuania\|Moldova, Republic of\|Poland\|Romania\|Slovakia\|Spain\|Sweden\|Switzerland\|Turkey\|United Kingdom	1
United States\|Australia\|Canada\|Czechia\|Denmark\|France\|Germany\|Hungary\|Japan\|Korea, Republic of\|Norway\|Poland\|Russian Federation\|Spain\|Sweden\|United Kingdom	1
United States\|Australia\|Canada\|Czechia\|Denmark\|France\|Germany\|Hungary\|Japan\|Korea, Republic of\|Poland\|Russian Federation\|Spain\|Sweden\|United Kingdom	1
United States\|Australia\|Canada\|Denmark\|Hong Kong\|India\|Korea, Republic of\|Malaysia\|Mexico\|Poland\|Serbia\|Slovakia\|South Africa\|Sweden\|United Kingdom	1
United States\|Australia\|Canada\|France\|Germany\|Israel\|Italy\|Netherlands\|New Zealand\|Poland\|Spain\|United Kingdom	1
United States\|Australia\|Czech Republic\|Germany\|Italy\|Poland\|Puerto Rico\|Romania\|Russian Federation\|Spain\|Taiwan\|United Kingdom	1
United States\|Australia\|Malaysia\|New Zealand	1
United States\|Australia\|Netherlands	1
United States\|Australia\|New Zealand	1
United States\|Austria\|Belgium\|Croatia\|Czech Republic\|Germany\|Latvia\|Lithuania\|Poland\|Romania\|Russian Federation\|Serbia\|South Africa\|Ukraine\|United Kingdom	1
United States\|Austria\|Finland\|France\|Germany\|Italy	1
United States\|Austria\|Germany\|Hong Kong\|Taiwan\|United Kingdom	1
United States\|Belgium\|Canada\|Czechia\|Germany	1
United States\|Belgium\|Canada\|Germany\|India\|Poland\|United Kingdom	1
United States\|Belgium\|Czechia\|France\|Germany\|Greece\|Hungary\|Italy\|Poland\|Russian Federation\|Ukraine	1
United States\|Belgium\|Germany\|Lithuania\|Poland\|United Kingdom	1
United States\|Belgium\|Portugal\|Spain	1
United States\|Brazil\|Canada	1
United States\|Brazil\|France\|Italy\|Korea, Republic of\|Russian Federation\|Ukraine	1
United States\|Brazil\|Hungary\|Mexico\|Poland\|Romania\|South Africa\|Spain\|Ukraine	1
United States\|Bulgaria	1
United States\|Bulgaria\|Canada\|Georgia\|Germany\|Poland\|South Africa\|Ukraine	1
United States\|Bulgaria\|Croatia\|Czech Republic\|Germany\|Poland\|Romania\|Russian Federation\|Switzerland	1
United States\|Bulgaria\|Croatia\|Georgia\|Germany\|Hungary\|South Africa\|Ukraine\|United Kingdom	1
United States\|Bulgaria\|Croatia\|Georgia\|Hungary\|Serbia\|Slovenia\|Ukraine	1
United States\|Bulgaria\|Czech Republic\|Germany\|Hungary\|Italy\|Poland\|Puerto Rico\|Romania\|United Kingdom	1
United States\|Bulgaria\|Czechia\|Hungary\|Poland\|Romania\|South Africa\|Spain	1
United States\|Bulgaria\|France\|Germany\|Italy\|Poland\|Romania\|Spain\|United Kingdom	1
United States\|Canada\|Chile\|Mexico\|Turkey	1
United States\|Canada\|China\|Germany\|Japan\|Malaysia\|United Kingdom	1
United States\|Canada\|Denmark	1
United States\|Canada\|Denmark\|France\|Germany\|Greece\|Italy\|Netherlands\|Romania\|Russian Federation\|Spain\|United Kingdom	1
United States\|Canada\|Denmark\|Germany\|Norway\|Sweden	1
United States\|Canada\|France\|Malaysia\|Philippines\|Singapore\|Spain\|Sweden\|Taiwan\|United Kingdom	1
United States\|Canada\|Germany	1
United States\|Canada\|Germany\|Russian Federation\|Spain	1
United States\|Canada\|Puerto Rico\|Taiwan	1
United States\|Canada\|United Kingdom	1
United States\|Cayman Islands	1
United States\|Chile	1
United States\|China\|Czechia\|France\|Hungary\|Israel\|Italy\|Mexico\|Poland\|Romania\|Slovakia\|South Africa\|Spain	1
United States\|Croatia\|Czech Republic\|Denmark\|Georgia\|Hungary\|Italy\|Serbia\|Slovenia\|Ukraine	1
United States\|Czech Republic\|Denmark\|Germany\|Greece\|Italy\|Netherlands\|Portugal\|Russian Federation\|Spain\|Sweden\|United Kingdom	1
United States\|Finland\|France\|Israel\|Italy\|Lithuania\|Netherlands\|Poland\|Russian Federation\|Spain\|Turkey\|United Kingdom	1
United States\|France\|Germany\|Hungary\|Italy\|Lithuania\|Poland\|Spain	1
United States\|France\|Germany\|Lithuania\|Poland	1
United States\|France\|Germany\|Netherlands\|United Kingdom	1
United States\|France\|Italy\|Spain	1
United States\|France\|Spain\|United Kingdom	1
United States\|Germany	1
United States\|Germany\|Greece\|Italy\|Netherlands\|Poland\|Portugal\|Puerto Rico\|Spain\|Taiwan	1
United States\|Germany\|Italy\|Spain	1
United States\|Germany\|Puerto Rico\|United Kingdom	1
United States\|Germany\|United Kingdom	1
United States\|Guatemala	1
United States\|Hong Kong\|Argentina\|Australia\|Chile\|Colombia\|Korea, Republic of\|Malaysia\|Mexico\|New Zealand\|Peru\|Philippines\|Puerto Rico\|Singapore\|Taiwan\|Thailand	1
United States\|Hungary\|Lithuania\|Mexico\|Poland	1
United States\|India	1
United States\|Japan\|Mexico\|Puerto Rico	1
United States\|Japan\|United Kingdom	1
United States\|New Zealand	1
United States\|Spain\|United Kingdom	1
United States\|Sweden	1
United States\|United Kingdom	1
Vietnam	1

Sites per Study

Site_count	Study_Count
1	1035
2	107
3	46
4	32
5	24
6	17
7	18
8	9
9	10
10	9
11	14
12	11
13	11
14	4
15	13
16	13
17	4
18	11
19	6
20	9
21	8
22	2
23	4
24	6
25	6
26	6
27	3
28	9
29	2
30	7
31	5
32	4
33	3
34	6
35	4
36	4
37	4
38	4
39	5
40	5
41	4
42	1
43	3
44	2
45	5
47	3
49	3
50	3
51	2
52	2
53	2
54	2
55	3
57	3
58	2
60	2
62	2
64	1
66	2
67	2
68	1
69	1
71	1
72	3
73	3
75	1
76	2
83	2
84	1
85	2
89	2
90	2
91	2
98	1
99	1
105	2
106	3
107	1
109	1
111	1
114	2
115	1
118	2
123	1
124	1
125	1
129	1
133	2
138	1
141	1
142	1
143	1
145	1
150	1
157	1
160	2
168	1
169	1
170	1
183	1
184	1
190	1
192	1
196	1
203	1
209	1
210	1
229	1
231	1
239	1
249	1
278	1
342	1
360	1
381	1
398	1
439	1
465	1
503	1
593	1
602	1
754	1
972	1
973	1

Phase

Phase	Study_Count
N/A	553
Phase 3	306
Phase 2	302
Phase 4	249
Phase 1	123
Phase 2/Phase 3	44
Phase 1/Phase 2	43
Early Phase 1	10

Number of Arms

Number_of_Arms	Count_of_Studies
1	276
2	901
3	167
4	103
5	28
6	17
7	7
8	6
13	1
NA	124

Number of Updates

Count of Versions	Count of Studies
1	154
2	194
3	185
4	209
5	158
6	124
7	88
8	86
9	61
10	47
11	45
12	24
13	23
14	18
15	16
16	15
17	11
18	17
19	10
20	10
21	11
22	5
23	10
24	7
25	6
26	4
27	4
28	3
29	2
30	5
31	2
32	5
33	4
34	6
35	1
36	1
37	6
38	2
39	1
42	3
43	2
44	3
45	1
46	1
47	2
48	1
50	1
51	1
52	1
53	1
54	3
57	1
58	1
59	1
60	1
62	1
63	1
64	3
65	1
66	1
69	1
70	1
71	1
73	1
76	1
78	1
80	1
83	1
85	1
91	1
92	1
95	1
116	1
119	1
120	2
121	1
135	1
139	1

Update History Change Type

Change Type	Count_of_Changes	Count_of_Studies	ratio
Study Status	12572	1476	8.517615
Contacts/Locations	6682	1299	5.143957
Recruitment Status	2419	1293	1.870843
Study Design	1766	1138	1.551845
None (earliest Version on record)	1630	1630	1.000000
Outcome Measures	1373	800	1.716250
Eligibility	1194	690	1.730435
Arms	1043	658	1.585106
Interventions	1043	658	1.585106
Sponsor/Collaborators	969	657	1.474886
Study Description	958	575	1.666087
Study Identification	850	547	1.553931
Oversight	604	486	1.242798
References	446	259	1.722008
Conditions	409	290	1.410345
More Information	388	192	2.020833
Results	270	270	1.000000
IPDSharing	242	194	1.247423
Baseline Characteristics	136	120	1.133333
Reported Adverse Events	117	103	1.135922
Results Submission Events	103	103	1.000000
Participant Flow	99	89	1.112360
Documents	96	81	1.185185
2020 Outcome Measures	1	1	1.000000
2020 Study Status	1	1	1.000000
Quality Control Review has not concludedReturned: February 10	1	1	1.000000
Quality Control Review has not concludedReturned: March 17	1	1	1.000000

Enrollment Metrics by Phase

Measure	Early.Phase.1	N.A	Phase.1	Phase.1.Phase.2	Phase.2	Phase.2.Phase.3	Phase.3	Phase.4
Min.	12.0	3.0000	5.00000	2.00000	1.0000	15.0000	3.000	2.0000
1st Qu.	15.5	30.0000	12.25000	22.50000	34.7500	41.0000	94.000	30.2500
Median	27.0	61.5000	24.00000	36.00000	76.5000	100.0000	217.000	72.5000
Mean	32.7	472.5751	32.04098	85.07143	112.5633	345.1395	681.177	546.9472
3rd Qu.	40.0	150.0000	36.00000	60.00000	141.0000	210.0000	486.000	192.0000
Max.	75.0	42127.0000	194.00000	1000.00000	1058.0000	4110.0000	25210.000	51520.0000

Trial Group Type

group_type	Group_Count
Experimental	1669
Active Comparator	845
Placebo Comparator	425
No Intervention	228
Other	154
NA	124
Sham Comparator	22

Intervention Model

intervention_model	Study_Count
Parallel Assignment	1065
Single Group Assignment	346
Crossover Assignment	169
Factorial Assignment	28
Sequential Assignment	11
NA	11

Primary Purpose

primary_purpose	Study_Count
Treatment	1117
Prevention	201
Supportive Care	62
Other	54
Basic Science	53
Health Services Research	52
Diagnostic	43
NA	35
Screening	12
Device Feasibility	1

Observational Studies

Studies by Country

Country	Study_Count
United States	132
NA	50
United Kingdom	31
France	30
China	26
Germany	18
Denmark	13
Belgium	11
Canada	10
Korea, Republic of	10
Japan	8
Spain	8
Turkey	8
Italy	7
Netherlands	6
Sweden	6
Taiwan	6
Brazil	5
Israel	5
Austria	4
Russian Federation	4
Switzerland	4
Thailand	4
United States\|Canada	4
Egypt	3
Greece	3
Hungary	2
Romania	2
Albania	1
Argentina\|Belgium\|Czechia\|Denmark\|Finland\|France\|Germany\|Hungary\|Ireland\|Israel\|Italy\|Lithuania\|Luxembourg\|Netherlands\|Norway\|Russian Federation\|Saudi Arabia\|Serbia\|Slovenia\|Spain\|Sweden\|Switzerland\|United Kingdom	1
Australia	1
Australia\|Belgium	1
Australia\|Canada\|United Kingdom	1
Australia\|United Kingdom	1
Austria\|Belgium\|France\|Germany\|Spain\|Switzerland\|United Kingdom	1
Austria\|Bulgaria\|Czech Republic\|Greece\|Hungary\|Italy\|Poland\|Spain	1
Austria\|Denmark\|France\|Germany\|Italy\|Netherlands\|Spain	1
Austria\|Germany	1
Austria\|Germany\|Israel\|Italy\|Netherlands\|Poland\|Spain	1
Austria\|Italy\|Netherlands\|Spain	1
Belarus	1
Brazil\|France\|Norway\|South Africa\|Sweden\|Thailand\|United Kingdom	1
Bulgaria\|Czech Republic\|Romania	1
Chile	1
Croatia	1
Croatia\|Serbia	1
Czechia	1
Finland	1
Finland\|France\|Italy\|Sweden\|Switzerland\|United Kingdom	1
Germany\|Austria\|France\|Italy\|Poland\|Romania\|Slovenia\|Spain\|Switzerland\|United Kingdom	1
Germany\|India\|Sri Lanka	1
Haiti	1
Hong Kong	1
India	1
Indonesia	1
Macedonia, The Former Yugoslav Republic of	1
Malaysia	1
Mexico	1
Norway	1
Pakistan	1
Singapore	1
Slovenia	1
South Africa	1
Sweden\|United Kingdom	1
United States\|Argentina\|Australia\|Belgium\|Brazil\|Canada\|Czech Republic\|France\|Germany\|Italy\|Japan\|Netherlands\|Norway\|Poland\|Romania\|Spain\|Sweden\|Switzerland\|Turkey\|United Kingdom	1
United States\|Bolivia\|Canada\|Chile\|India\|United Kingdom	1
United States\|Canada\|Israel\|Singapore\|United Kingdom	1
United States\|Italy\|Sweden\|United Kingdom	1
United States\|Puerto Rico	1

Sites per Study

Site_count	Study_Count
1	348
2	33
3	10
4	3
5	8
6	3
7	3
8	3
9	2
10	3
11	2
12	5
13	4
14	2
16	1
17	2
18	3
19	2
21	3
22	2
23	1
24	1
26	2
29	1
31	2
32	1
35	1
40	1
41	1
52	1
69	1
76	1
87	1
95	1
108	1
266	1
908	1

Number of Updates

Count of Versions	Count of Studies
1	80
2	79
3	83
4	38
5	33
6	30
7	17
8	14
9	13
10	10
11	7
12	7
13	5
14	2
15	1
16	2
17	4
18	4
22	2
23	1
24	3
26	1
28	1
30	1
31	3
33	1
37	2
39	2
53	1
54	2
56	1
59	1
62	1
66	1
79	1
85	1
91	1
102	1
105	1
120	1
121	1
159	1

Update History Change Type

Change Type	Count_of_Changes	Count_of_Studies	ratio
Study Status	3175	381	8.333333
Contacts/Locations	856	300	2.853333
Study Description	593	149	3.979866
Recruitment Status	462	291	1.587629
None (earliest Version on record)	461	461	1.000000
Study Design	431	255	1.690196
Sponsor/Collaborators	236	155	1.522581
Eligibility	233	139	1.676259
Outcome Measures	207	152	1.361842
Study Identification	160	111	1.441441
Groups	154	122	1.262295
Interventions	154	122	1.262295
References	109	53	2.056604
Oversight	102	87	1.172414
Conditions	97	65	1.492308
Results	34	34	1.000000
IPDSharing	33	30	1.100000
More Information	25	20	1.250000
Baseline Characteristics	5	5	1.000000
Results Submission Events	4	4	1.000000
Documents	3	2	1.500000
Reported Adverse Events	2	2	1.000000
Participant Flow	1	1	1.000000

Enrollment Metrics

Measure	Observational
Min	1.00
1st Qu	63.50
Median	180.50
Mean	74308.88
3rd Qu	596.00
Max	19929901.00

Observation Model

observational_model	Study_Count
Cohort	284
Case-Only	44
Case-Control	36
NA	34
Case Control	27
Other	23
Case-Crossover	4
Family-Based	4
Defined Population	2
Natural History	2
Case Control, Natural History	1

Time Perspective

time_perspective	Study_Count
Prospective	286
Cross-Sectional	79
Retrospective	60
Other	16
NA	16
Longitudinal, Retrospective	2
Cross-Sectional, Retrospective/Prospective	1
Longitudinal, Retrospective/Prospective	1

Registries

Studies by Country

Country	Study_Count
United States	14
NA	5
Germany	3
China	2
India	2
Taiwan	2
Turkey	2
United Kingdom	2
Australia\|Germany\|United Kingdom	1
Austria	1
Belgium\|Austria\|France\|Germany\|Switzerland	1
Denmark	1
Egypt	1
Korea, Republic of	1
Netherlands\|Russian Federation	1
Pakistan	1
Russian Federation	1
Spain	1
Sweden	1
Switzerland	1

Sites per Study

Site_count	Study_Count
1	32
2	1
3	1
4	2
6	1
9	1
12	2
14	1
18	1
20	1
125	1

Number of Updates

Count of Versions	Count of Studies
1	9
2	6
3	6
4	6
5	2
6	3
7	2
8	1
9	1
10	1
11	2
12	1
13	1
15	2
31	1

Update History Change Type

Change Type	Count_of_Changes	Count_of_Studies	ratio
Study Status	196	35	5.600000
Contacts/Locations	93	24	3.875000
None (earliest Version on record)	44	44	1.000000
Recruitment Status	33	21	1.571429
Study Description	29	17	1.705882
Study Design	26	17	1.529412
Outcome Measures	24	13	1.846154
Eligibility	19	17	1.117647
Study Identification	16	13	1.230769
Groups	13	11	1.181818
Interventions	13	11	1.181818
References	13	8	1.625000
Sponsor/Collaborators	11	10	1.100000
Oversight	8	7	1.142857
Conditions	7	7	1.000000
IPDSharing	5	5	1.000000
Results	2	2	1.000000
More Information	1	1	1.000000
Reported Adverse Events	1	1	1.000000

Enrollment Metrics

Measure	Registries
Min	30.0
1st Qu	192.5
Median	381.0
Mean	159863.2
3rd Qu	2507.5
Max	5940299.0

Registry Model

observational_model	Study_Count
Cohort	30
Case-Control	4
Case-Only	3
Other	3
Case Control	2
NA	2

Time Perspective

time_perspective	Study_Count
Prospective	31
Cross-Sectional	11
Other	1
NA	1

Follow-up

target_duration	Study_Count
10 Years	8
5 Years	6
1 Day	5
2 Years	4
12 Months	2
2 Months	2
20 Years	2
24 Months	2
3 Years	2
1 Year	1
12 Weeks	1
17 Years	1
18 Months	1
2 Weeks	1
36 Months	1
6 Months	1
7 Years	1
8 Years	1
84 Months	1
90 Days	1

intervention_type	Study_Count
Drug	644
Drug\|placebo	305
Other	169
Behavioral	123
Device	83
Dietary Supplement	53
Procedure	52
Dietary Supplement\|placebo	32
Biological	29
Drug\|Other	25
Drug\|Procedure	17
Biological\|placebo	9
Device\|Drug	8
Behavioral\|Other	6
Biological\|Drug	6
Device\|Other	6
Diagnostic Test	6
Dietary Supplement\|Drug\|placebo	6
Behavioral\|Dietary Supplement	5
Dietary Supplement\|Drug	5
Biological\|Procedure	4
Device\|Procedure	4
Behavioral\|Drug	3
Drug\|Other\|placebo	3
Other\|Procedure	3
Behavioral\|Procedure	2
Biological\|Drug\|placebo	2
Biological\|Other	2
Dietary Supplement\|Other	2
Drug\|placebo\|Procedure	2
Other\|placebo	2
Behavioral\|Device	1
Behavioral\|Drug\|Procedure	1
Biological\|Device\|Other	1
Biological\|Drug\|Other	1
Combination Product\|placebo	1
Device\|Drug\|Other	1
Diagnostic Test\|Other	1
Dietary Supplement\|Drug\|Other	1
Dietary Supplement\|Other\|placebo	1
Drug\|Procedure\|Radiation	1
Drug\|Radiation	1
Radiation	1

Count of Versions	Count of Studies
1	154
2	194
3	185
4	209
5	158
6	124
7	88
8	86
9	61
10	47
11	45
12	24
13	23
14	18
15	16
16	15
17	11
18	17
19	10
20	10
21	11
22	5
23	10
24	7
25	6
26	4
27	4
28	3
29	2
30	5
31	2
32	5
33	4
34	6
35	1
36	1
37	6
38	2
39	1
42	3
43	2
44	3
45	1
46	1
47	2
48	1
50	1
51	1
52	1
53	1
54	3
57	1
58	1
59	1
60	1
62	1
63	1
64	3
65	1
66	1
69	1
70	1
71	1
73	1
76	1
78	1
80	1
83	1
85	1
91	1
92	1
95	1
116	1
119	1
120	2
121	1
135	1
139	1

Site_count	Study_Count
1	348
2	33
3	10
4	3
5	8
6	3
7	3
8	3
9	2
10	3
11	2
12	5
13	4
14	2
16	1
17	2
18	3
19	2
21	3
22	2
23	1
24	1
26	2
29	1
31	2
32	1
35	1
40	1
41	1
52	1
69	1
76	1
87	1
95	1
108	1
266	1
908	1

Count of Versions	Count of Studies
1	80
2	79
3	83
4	38
5	33
6	30
7	17
8	14
9	13
10	10
11	7
12	7
13	5
14	2
15	1
16	2
17	4
18	4
22	2
23	1
24	3
26	1
28	1
30	1
31	3
33	1
37	2
39	2
53	1
54	2
56	1
59	1
62	1
66	1
79	1
85	1
91	1
102	1
105	1
120	1
121	1
159	1

Count of Versions	Count of Studies
1	154
2	194
3	185
4	209
5	158
6	124
7	88
8	86
9	61
10	47
11	45
12	24
13	23
14	18
15	16
16	15
17	11
18	17
19	10
20	10
21	11
22	5
23	10
24	7
25	6
26	4
27	4
28	3
29	2
30	5
31	2
32	5
33	4
34	6
35	1
36	1
37	6
38	2
39	1
42	3
43	2
44	3
45	1
46	1
47	2
48	1
50	1
51	1
52	1
53	1
54	3
57	1
58	1
59	1
60	1
62	1
63	1
64	3
65	1
66	1
69	1
70	1
71	1
73	1
76	1
78	1
80	1
83	1
85	1
91	1
92	1
95	1
116	1
119	1
120	2
121	1
135	1
139	1

Site_count	Study_Count
1	348
2	33
3	10
4	3
5	8
6	3
7	3
8	3
9	2
10	3
11	2
12	5
13	4
14	2
16	1
17	2
18	3
19	2
21	3
22	2
23	1
24	1
26	2
29	1
31	2
32	1
35	1
40	1
41	1
52	1
69	1
76	1
87	1
95	1
108	1
266	1
908	1

Count of Versions	Count of Studies
1	80
2	79
3	83
4	38
5	33
6	30
7	17
8	14
9	13
10	10
11	7
12	7
13	5
14	2
15	1
16	2
17	4
18	4
22	2
23	1
24	3
26	1
28	1
30	1
31	3
33	1
37	2
39	2
53	1
54	2
56	1
59	1
62	1
66	1
79	1
85	1
91	1
102	1
105	1
120	1
121	1
159	1

kidney diseases

Study Counts

Studies over Time

Interventional Trials

Intervention Type

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Studies by Country

Sites per Study

Phase

Number of Arms

Number of Updates

Update History Change Type

Enrollment Metrics by Phase

Trial Group Type

Intervention Model

Primary Purpose

Observational Studies

Studies by Country

Sites per Study

Number of Updates

Update History Change Type

Enrollment Metrics

Observation Model

Time Perspective

Registries

Studies by Country

Sites per Study

Number of Updates

Update History Change Type

Enrollment Metrics

Registry Model

Time Perspective

Follow-up

Count of Versions	Count of Studies
1	154
2	194
3	185
4	209
5	158
6	124
7	88
8	86
9	61
10	47
11	45
12	24
13	23
14	18
15	16
16	15
17	11
18	17
19	10
20	10
21	11
22	5
23	10
24	7
25	6
26	4
27	4
28	3
29	2
30	5
31	2
32	5
33	4
34	6
35	1
36	1
37	6
38	2
39	1
42	3
43	2
44	3
45	1
46	1
47	2
48	1
50	1
51	1
52	1
53	1
54	3
57	1
58	1
59	1
60	1
62	1
63	1
64	3
65	1
66	1
69	1
70	1
71	1
73	1
76	1
78	1
80	1
83	1
85	1
91	1
92	1
95	1
116	1
119	1
120	2
121	1
135	1
139	1

Site_count	Study_Count
1	348
2	33
3	10
4	3
5	8
6	3
7	3
8	3
9	2
10	3
11	2
12	5
13	4
14	2
16	1
17	2
18	3
19	2
21	3
22	2
23	1
24	1
26	2
29	1
31	2
32	1
35	1
40	1
41	1
52	1
69	1
76	1
87	1
95	1
108	1
266	1
908	1

Count of Versions	Count of Studies
1	80
2	79
3	83
4	38
5	33
6	30
7	17
8	14
9	13
10	10
11	7
12	7
13	5
14	2
15	1
16	2
17	4
18	4
22	2
23	1
24	3
26	1
28	1
30	1
31	3
33	1
37	2
39	2
53	1
54	2
56	1
59	1
62	1
66	1
79	1
85	1
91	1
102	1
105	1
120	1
121	1
159	1